I'm running the same hardware I've always had. I've upgraded my OSX a few times(I have Tiger currently 10.4.11), and taken the itunes update a few times (I now have 7.6.2 (9)). But as far as hardware goes I'm only running what came with my G4 Imac which includes a DVD/CDR Superdrive Player/Burner. I think it must be related to the upgrades. I had the very first version of OSX when I got my Imac and the version of itunes that came with it. When any songlist I created contained too many songs to burn on an audio CD, itunes would give me a dialogue box stating that "all the songs will not fit on the CD, would you like to burn them as MP3s?". I would click YES, and POW... the computer was burning my wave files onto a disc as MP3S, while keeping them as wave files in itunes It doesn't want to do that now, and I don't understand why :(